I looked around and couldn't find the answer to this anywhere, so I'm sorry if this is a bad question - I'm pretty new to mathematica. I wrote a program to help me compute some annoying series expansions, and the output is pretty ugly, for example:

So in this case, X[1,1] is my $X_{1}$? And I'm slightly confused how to modify this code to match my case - I'm not sure what would go in for "List", for example, as I have no list.
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laplacian13Mar 5 '13 at 22:38

So what do you have? Subscript? Please enter a Mathematica expression into the question. Please also read a bit about Mathematica, FullForm, Apply, Plus, List, etc. Or follow one of the online tutorials or go to a training or some such.
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Rolf MertigMar 5 '13 at 22:54

Yes, I'm just using subscripts. The subscripts do not correspond to a matrix or anything (I see now where that confusion may have come from), but rather each $X_{i}$ is a vector field, and each $X_{i,j}$ is a Lie bracket of two vector fields. I've done some tutorials and read about Mathematica, I just never found what I was looking for.
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laplacian13Mar 5 '13 at 22:58

Just post your program to do the series expansions. Tthen people will help you.
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Rolf MertigMar 6 '13 at 8:35

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